PKIX1 { }
DEFINITIONS IMPLICIT TAGS ::=
BEGIN
id-ce   keyIdentifier             [1] Key	dentifier            OPTIONAL,
      auth
    -- authorityCertormation
PolicyInformation :
SubjectKeyIdentifier ::= KeyIdentifier
id-ce-keyUsage OBJECT IDENTIFIER ::=  { id-ce 15 }
KeyUsage ::= BIT STRING {
     digitalSignature        (0),
     nonRe,
     notAfter        [fier
id-ce-keyUsage OBJECT IDENTlifiers   SEQUENCE SIZE (NAL }
   F